You are correct, fructose is not a high GI carb, my mistake.Originally Posted by Built
McDevitt RM, Poppitt SD, Murgatroyd PR, Prentice AM.
Medical Research Council Dunn Clinical Nutrition Centre, Cambridge, United Kingdom. email@example.com
BACKGROUND: Previous short-term studies (< or =6 h) showed differences in energy expenditure (EE) and macronutrient oxidation in response to overfeeding with different types of dietary carbohydrate. This finding could have implications for obesity. OBJECTIVE: We used 96-h continuous whole-body calorimetry in 8 lean and 5 obese women to assess metabolic disposal (energy dissipation and glycogen or fat storage) of a controlled excess of dietary energy supplied as different carbohydrate sources or as fat. DESIGN: Five dietary treatments were applied in random order: energy balance (control) and overfeeding by 50% of energy requirements with fat (O(fat)) or predominantly with glucose, fructose, or sucrose (O(cho)). Macronutrient oxidation rates were assessed from nonprotein gaseous exchanges. Net macronutrient balances were calculated as cumulative differences between intake and oxidation. RESULTS: Increased EE in response to overfeeding dissipated 7.9% of the energy excess with a variation in EE of <1.7% across overfeeding treatments (NS). EE during the O(fat) treatment significantly exceeded that during the control treatment in the lean but not in the obese women. There were no significant differences between lean and obese women in macronutrient oxidation or balances, so data were pooled. O(cho) induced glycogen storage on day 1 ( approximately 100 g) but thereafter progressively stimulated carbohydrate oxidation so that balance was reached on days 3 and 4. Fat oxidation was proportionately suppressed. Of the excess carbohydrate, 74% was oxidized; there were no significant differences between the various O(cho) treatments. O(fat) stimulated fat oxidation by 18% and suppressed carbohydrate oxidation. On average, 12% of the excess energy was stored as glycogen and 88% as fat; there was no significant difference between overfeeding treatments. CONCLUSION: There was no significant difference in fat balance during controlled overfeeding with fat, fructose, glucose, or sucrose.
Again, I might need to do some more research in this area.
"It is often said, mainly by the "no-contests", that although there is no positive evidence for the existence of God, nor is there evidence against his existence. So it is best to keep an open mind and be agnostic. At first sight that seems an unassailable position, at least in the weak sense of Pascal's wager. But on second thought it seems a cop-out, because the same could be said of Father Christmas and tooth fairies. There may be fairies at the bottom of the garden. There is no evidence for it, but you can't prove that there aren't any, so shouldn't we be agnostic with respect to fairies?"
"Out of all of the sects in the world, we notice an uncanny coincidence: the overwhelming majority just happen to choose the one that their parents belong to. Not the sect that has the best evidence in its favour, the best miracles, the best moral code, the best cathedral, the best stained glass, the best music: when it comes to choosing from the smorgasbord of available religions, their potential virtues seem to count for nothing, compared to the matter of heredity. This is an unmistakable fact; nobody could seriously deny it. Yet people with full knowledge of the arbitrary nature of this heredity, somehow manage to go on believing in their religion, often with such fanaticism that they are prepared to murder people who follow a different one."
"Bah. You know I hate poor people."
The conclusion you quoted is not proof of no effect, but rather is not proof of an effect. Not quite the same thing, of course.
It's an interesting puzzle.
"the 2 monosaccharides—glucose and fructose—are metabolized differently. Hellerstein (111) showed that there is little de novo lipogenesis from glucose under eucaloric conditions in humans. In contrast, Schwarz et al (29, 30, 112) reported 3- to 15-fold increases in fractional de novo lipogenesis from fructose above fasting concentrations in obese and lean subjects (29, 30) and nearly 30% of circulating triacylglycerol palmitate after fructose ingestion resulted from de novo lipogenesis derived from fructose (112). "
My thinking is that since the original post had to do with belly fat, which is associated with insulin resistance, and he's drinking fruit juice all day (fructose and other sugars) eliminating the calories consumed from the fruit juice won't hurt, and might help.
Is it real fruit juice though? Look at the label, i bet it has a ton of high fructose corn syrup, and like 10% juice. Hell even if it was 100% juice, juice is very calorie dense. Imagine how many pieces of fruit you would have to squeeze to get 1 tall glass of juice. Then ask how many glasses of juice youre drinking per day. Next do the math and ask yourself if you would ever conceive of actually eating that much fruit while trying to stay lean.Originally Posted by RussianRocket
I eat about 2-4 pieces of fruit per day, i think thats probably above average. I bet that wouldnt even be 1 glass of juice if i were to "juice" my fruit. Not only that but you miss out on the fiber by just drinking the juice.
Juice = evil :evillaugh
"Remember not only to say the right thing in the right place, but far more difficult still, to leave unsaid the wrong thing at the tempting moment."
07-31-09 - 6'4" 220 lb.